Last June, Kalanick was ousted as Uber's chief executive and pushed out by the company’s board amid a litany of regulatory problems, driver and consumer scandals, and court cases.

In December 2017, a group of investors led by Japan's SoftBank Group Corp bought a 17.5% stake in the ride-hailing firm. As part of the deal, Kalanick sold nearly a third of his shares in the company for about $1.4 billion.